نتایج جستجو برای: eggshells

تعداد نتایج: 593  

2014
Stéphanie Grizard Francisco Dini-Andreote B Irene Tieleman Joana F Salles

Microorganisms are closely associated with eggs and may play a determinant role in embryo survival. Yet, the majority of studies focusing on this association relied on culture-based methodology, eventually leading to a skewed assessment of microbial communities. By targeting the 16S rRNA gene and internal transcribed spacer (ITS) region, we, respectively, described bacterial and fungal communit...

Journal: :PloS one 2016
Cristina Ruiz-Castellano Gustavo Tomás Magdalena Ruiz-Rodríguez David Martín-Gálvez Juan José Soler

Selective pressures imposed by pathogenic microorganisms to embryos have selected in hosts for a battery of antimicrobial lines of defenses that includes physical and chemical barriers. Due to the antimicrobial properties of volatile compounds of green plants and of chemicals of feather degrading bacteria, the use of aromatic plants and feathers for nest building has been suggested as one of th...

2015
Konstantin Hallmann Eva Maria Griebeler Gregorio Moreno-Rueda

The eggshell is an important physiological structure for the embryo. It enables gas exchange, physical protection and is a calcium reserve. Most squamates (lizards, snakes, worm lizards) lay parchment-shelled eggs, whereas only some gekkotan species, a subgroup of lizards, have strongly calcified eggshells. In viviparous (live-bearing) squamates the eggshell is reduced or completely missing (he...

Journal: :Poultry science 2016
Z Liu X Sun C Cai W He F Zhang R J Linhardt

Glycosaminoglycans (GAG) are linear, highly negatively charged polysaccharides that may perform an important role in biomineralization. GAG were isolated from chicken eggshell membranes and calcified shells. Disaccharide compositional analysis was performed using liquid chromatography-mass spectrometry. All 4 groups of GAG - hyaluronan (HA), keratan sulfate (KS), chondroitin sulfate (CS), and h...

Journal: :International Journal of Engineering & Technology 2018

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